Unless you’ve advised them otherwise, your employer should assume that you are taking a full 52 weeks’ maternity leave - If you decide to return to work earlier than that, you need to give at least eight weeks’ notice. - All pregnant employees are entitled to Ordinary Maternity Leave, which is 26 weeks. After this, you can choose to take Additional Maternity Leave, which lasts another 26 weeks and begins straight after OML. - You accrue annual leave as normal during your maternity leave, so you might want to ask your employer if you can use some holiday to have a phased return, a career break or further unpaid leave.